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American Midland Naturalist Monograph No. 3 



the length of 9 or 10), simple; Metathoracic pleural group (9-12) of four 

 hairs; hair 9 long, with several weak lateral branches; hair 10 long, simple; 

 hair 11 minute; hair 12 short, usually bifid. Metathoracic palmate hair (1) 

 with numerous slender transparent leaflets. Abdomen: Submedian dorsal 

 hair (0) present on segments II to VII, small, branched. Palmate hair (1) 

 well-developed on segments I to VII (smaller on segment I and VII), indi- 

 vidual leaflets slender, with smooth margins. Antepalmate hair (2) long, 



Fig. 42. Larva of Anopheles alhimanus Wiedemann. A, Thorax and abdomen. 

 B, Peclen. C, Head. D, Leaflets of palmate hair. 



